BONG AirPro bubble envelope Inner dimensions: 145 x 215 mm, Outside dimensions: 170 x 225 mm. white kraft paper 80 g/metres2 with polyethylene bubble padding, pressure-sensitive adhesive closure with covering stripes and hole for clip closure 100 pieces in a pack Versatile, easy mailing envelope: suitable for everything from electrical components to consumer goods. The air-cushioned and water resistant interior lining protects the contents.